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@Hitch tetro genot @frn ARTHUR H. sHERwoon, on soU'rHPoln, ooNNEo'rioUrl` Leiter-r Patent IVe. 69,033, dated Stillwater 1T. 1867: mitwaferl S'czztmn-ber` 7, 1867.

IMPROVED DOOR-BOLT.

To `ALL WHoM rr MAY eoNcEnN:

VBe it known that I,- Alt'lHUlt H. Sunnwooh, ot' Southport, in the county or" Fairfield, and State of Cow;` necticut, have invented a new and improved Self-Acting Bolt for Barn and Carriage-House Doors; andIdo; hereby declare that the following is a full, clear, and exact description thereof, whi'ehwill enable others skilled` in the art to make and uso the same, reference boing had to the accompanying drawings,` Lforming a part of this specification, in which- Figure is a view of the inside otl n. door, showing it closed and held by my bolt. Figure 2 is a view showing the position of the bolts and catch when the door closed.` Figure 3 is a view showing the same when the door is open. l Similar letters of reference indicate like parts.

My invention consists in the employment of two bolts, connected together bya toggle,` so .arranged that i the lower one, the heavier of the two bolts, (the one being intended 'for holding the top and the other the bottom of the door,) will be self-acting, the heavier bolts being provided with a catch or the likefor operating thc bolts from theoutside of the door, and for automatically catching upon a hook or the like secured tothe siding ofl f the barn or other building for holding the door open. i

A designates a door, hinged in the usual manner, so asto swing open against the-outside of a barn or otherl l building. C is the sill of a door and B the.lintel. In the present .instance the-inside of thc barn-door-ispro-1 `1 vided with buttons a a a a, to which my bolt is .shown as being attached. D and E represent the two parts` of the bolt. The part D is about half the length of the part E, and is intended for fastening the upper part of "j the door, by throwing its end into a groove or mortise, b, in the lintel, and the part Eis intendedzfor fastening` the lower` part of the door, by allowing its end to fall into a groove or mortise, b', in the sill of the door; The,

'comparative lengths of the bolts, as given, is not essential. It is necessary,`however, in order to have the bolt, as a whole, self-acting, to have the lower bolt E heavier than the 'other bolt D. The ends of the parts D and E are pivoted to a toggle, F, which works on asfulcrum-pin, u, secured to the button ai. The two parts DEoi"` the bolts are guided by staples d d', through which they pass. A stop-pin, e, is provided, which strikes against" the batten a when the door is thrown open, so as to prevent the part E of the bolt falling down too faim jA" l catch, G, is scoured to the part E of the bolt which passes through a slotV in the door, `as shown in fig. 2. `This-` f vservos as a. means for raising the part E of' the bolt for withdrawing it and thepartDfroin'thc groove or moi--` tises,'in order .to release the door, and it also serves use means for holding the'doorepenby its catching under" a staple orpin secured to the side of the barn.

From the above description itwillbe seen that the bolt is sel-zicting. So soon as tho `bolt is released raising the catch G, the heavier bolt E will fall down and bring the catch in a proper position to catch under the staple'to hold the door open. Now, by merely pushing the floor to, thc respective parts of tho bolt will bc` `crowded in to allow their passing the inclined face of the sill and lintel, and then inmediately be thrown thc weight ofthe part E intotheir respective grooves or mortiscs in the sill and linteLof thedoorway.

What I claim as new, and desire to secure by Letters Patent, isi The catch G, in combination with the bolt D E F, substantially as and for the purpose specified. The above specification of my invention signed by me this 2d day of February, 1866..

'i ARTHUR H. SHERWOOD.

Witnesses M. M. LIVINGSTON.. 

